Select the correct words to complete this text: The ideas of John Maynard Keynes are occasionally summarized with a simplified concept called "Keynes' Law". Keynes' Law states that " creates its own ". The idea is that Say was wrong, because the money paid by a company to its workers and suppliers does not necessarily make its way back to that company, since people and businesses all their income. This can cause a reduction in aggregate demand, getting the economy stuck in a . Therefore Keynes argues that if we want a prosperous economy, the most important thing to do is to stimulate , either by encouraging consumption or by promoting investment or by simply having the government spend more money